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So i have a few questions that my searching hasn't brought much clarity to… First:Can i run the iron cross wheel with tubes and challenge grifo open tub like a standard clincher wheel? (i have some laying around that need a home)Second:Come summer/ spring can i throw on a 28c road tire (gatorskin most likely) with tubes and use these wheels as gravel racing wheels? If so what psi would be recommended? I know theres something about 45psi as a max, but is that only for tubeless set ups? Id like to run around 100psi just like a standard road tire.

I would say the answer to all is yes. Why not contact Stans and get the manufacturers recommendation. Also why not tubeless? I run Mud 2 tires tubeless on my Alpha 340 comps on my cross bike at about 35 psi and they are great. They don't have to be tubeless tires to run them tubeless.

I just bought a Ridley X-Night Disc bike from Comp Cyclist. It was my first ever "box bike" (have always bought framesets and built up from there). Ridley shipped it with Iron Cross/Challenge Grifo clinchers as standard.

I'd be leery of running high pressures on the Iron Cross. I just built a set of these and they are very thin, light rims. Mine were both under 380g.

Also, with the reports of tubes blowing off Alpha 340s, I'm inclined to think this style of rim is inherently unsuited to high pressures. There's some advice from Stan's people here, although it stops short of being definitive:

I ran IC with tubes and grifo/fangos and they were great but as others have said, you cannot run pressure for road season. Stan's will tell you the same, as I asked that question prior to my IC purchase.

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